Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/PointerFinder.java @ 7440:79f492f184d0
8004982: JDK8 source with GPL header errors
Reviewed-by: ohair
author | katleman |
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date | Thu, 20 Dec 2012 16:24:51 -0800 |
parents | da91efe96a93 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.utilities; | |
26 | |
27 import sun.jvm.hotspot.code.*; | |
28 import sun.jvm.hotspot.debugger.*; | |
29 import sun.jvm.hotspot.gc_interface.*; | |
30 import sun.jvm.hotspot.interpreter.*; | |
31 import sun.jvm.hotspot.runtime.*; | |
32 import sun.jvm.hotspot.memory.*; | |
33 | |
34 /** This class, only intended for use in the debugging system, | |
35 provides the functionality of find() in the VM. */ | |
36 | |
37 public class PointerFinder { | |
38 public static PointerLocation find(Address a) { | |
39 PointerLocation loc = new PointerLocation(a); | |
40 | |
41 CollectedHeap heap = VM.getVM().getUniverse().heap(); | |
42 if (heap instanceof GenCollectedHeap) { | |
43 GenCollectedHeap genheap = (GenCollectedHeap) heap; | |
44 if (genheap.isIn(a)) { | |
45 for (int i = 0; i < genheap.nGens(); i++) { | |
46 Generation g = genheap.getGen(i); | |
47 if (g.isIn(a)) { | |
48 loc.gen = g; | |
49 break; | |
50 } | |
51 } | |
52 | |
53 if (Assert.ASSERTS_ENABLED) { | |
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54 Assert.that(loc.gen != null, "Should have found this in a generation"); |
0 | 55 } |
56 | |
57 if (VM.getVM().getUseTLAB()) { | |
58 // Try to find thread containing it | |
59 for (JavaThread t = VM.getVM().getThreads().first(); t != null; t = t.next()) { | |
60 ThreadLocalAllocBuffer tlab = t.tlab(); | |
61 if (tlab.contains(a)) { | |
62 loc.inTLAB = true; | |
63 loc.tlabThread = t; | |
64 loc.tlab = tlab; | |
65 break; | |
66 } | |
67 } | |
68 } | |
69 | |
70 return loc; | |
71 } | |
72 } else { | |
73 if (heap.isIn(a)) { | |
74 loc.heap = heap; | |
75 return loc; | |
76 } | |
77 } | |
78 | |
79 Interpreter interp = VM.getVM().getInterpreter(); | |
80 if (interp.contains(a)) { | |
81 loc.inInterpreter = true; | |
82 loc.interpreterCodelet = interp.getCodeletContaining(a); | |
83 return loc; | |
84 } | |
85 | |
86 if (!VM.getVM().isCore()) { | |
87 CodeCache c = VM.getVM().getCodeCache(); | |
88 if (c.contains(a)) { | |
89 loc.inCodeCache = true; | |
90 loc.blob = c.findBlobUnsafe(a); | |
91 if (Assert.ASSERTS_ENABLED) { | |
92 Assert.that(loc.blob != null, "Should have found CodeBlob"); | |
93 } | |
1748 | 94 loc.inBlobCode = loc.blob.codeContains(a); |
95 loc.inBlobData = loc.blob.dataContains(a); | |
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96 |
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97 if (loc.blob.isNMethod()) { |
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98 NMethod nm = (NMethod) loc.blob; |
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99 loc.inBlobOops = nm.oopsContains(a); |
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100 } |
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101 |
1748 | 102 loc.inBlobUnknownLocation = (!(loc.inBlobCode || |
0 | 103 loc.inBlobData || |
104 loc.inBlobOops)); | |
105 return loc; | |
106 } | |
107 } | |
108 | |
109 // Check JNIHandles; both local and global | |
110 JNIHandles handles = VM.getVM().getJNIHandles(); | |
111 JNIHandleBlock handleBlock = handles.globalHandles(); | |
112 if (handleBlock != null) { | |
113 handleBlock = handleBlock.blockContainingHandle(a); | |
114 } | |
115 if (handleBlock != null) { | |
116 loc.inStrongGlobalJNIHandleBlock = true; | |
117 loc.handleBlock = handleBlock; | |
118 return loc; | |
119 } else { | |
120 handleBlock = handles.weakGlobalHandles(); | |
121 if (handleBlock != null) { | |
122 handleBlock = handleBlock.blockContainingHandle(a); | |
123 if (handleBlock != null) { | |
124 loc.inWeakGlobalJNIHandleBlock = true; | |
125 loc.handleBlock = handleBlock; | |
126 return loc; | |
127 } else { | |
128 // Look in thread-local handles | |
129 for (JavaThread t = VM.getVM().getThreads().first(); t != null; t = t.next()) { | |
130 handleBlock = t.activeHandles(); | |
131 if (handleBlock != null) { | |
132 handleBlock = handleBlock.blockContainingHandle(a); | |
133 if (handleBlock != null) { | |
134 loc.inLocalJNIHandleBlock = true; | |
135 loc.handleBlock = handleBlock; | |
136 loc.handleThread = t; | |
137 return loc; | |
138 } | |
139 } | |
140 } | |
141 } | |
142 } | |
143 } | |
144 | |
145 | |
146 // Fall through; have to return it anyway. | |
147 return loc; | |
148 } | |
149 } |